Vitamin 1,25(OH)2 D

The analysis of vitamin 1,25 (OH)2 D is a laboratory test that is conducted to accurately determine the concentration of the active form of vitamin D, 1,25-dihydroxyvitamin D, in the blood. This test is essential for maintaining optimal health, and at our IntroLab laboratory in Belgrade, we provide expert and thorough guidance throughout the entire process.

What is vitamin 1,25(OH)2 D?

Vitamin 1,25 (OH)2 D, also known as calcitriol, is the most active form of vitamin D in the human body. This vitamin is synthesized in the kidneys through conversion from the form of vitamin D that has previously been absorbed from the diet or synthesized in the skin under the influence of sunlight.

Function of vitamin 1,25(OH)2 D

Vitamin 1,25(OH)2 D plays a crucial role in maintaining the balance of calcium and phosphorus in the body. It supports the absorption of calcium in the intestines and its reabsorption in the kidneys, regulates the release of calcium from bones into the bloodstream, and contributes to bone health. Additionally, this vitamin plays an important role in modulating the immune response and regulating cell growth.

The importance of measuring vitamin 1,25(OH)2 D

Measuring the levels of vitamin 1,25 (OH)2 D is essential for diagnosing and monitoring certain health conditions. Elevated levels may indicate:

• hypercalcemia
• hyperparathyroidism
• some forms of lymphoma

Decreased levels may be indicators of:

• kidney diseases
• hypoparathyroidism
• some types of cancer

Also, the levels of vitamin 1,25 (OH)2 D can be useful in monitoring the effects of therapy for these conditions.

When is this test needed?

This analysis is recommended when there are symptoms such as:

• weakness
• bone pain
• unusual weight loss
• elevated calcium levels in the blood that cannot be explained by other tests

Also, testing may be advisable if there is suspicion of diseases that can affect the kidneys, parathyroid glands, or bones.

Preparation for the analysis

A blood sample is needed for the analysis of vitamin 1,25 (OH)2 D. There are no special preparation requirements for this test, but it is recommended to avoid meals and drinks at least 8 hours before the test. Additionally, you should inform your doctor about all medications and supplements you are taking, as some of them can affect the results of the test.

Specifics and subtypes of analysis

When it comes to specifics, vitamin 1,25(OH)2 D is one of several forms of vitamin D, but it is the strongest and most active form. Another form of vitamin D, 25-hydroxyvitamin D, is the most commonly measured form of vitamin D and is used to assess the overall status of vitamin D. However, vitamin 1,25 (OH)2 D is used when it is necessary to understand specific pathological conditions related to calcium metabolism.